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- Title
蓄盐类抗凝冰沥青混合料长效性评价.
- Authors
郭鹏; 蔡东洋; 刘俊; 曹宇; 罗钰鸿; 冯云霞
- Abstract
Ice and snow disasters are the main factors affecting the efficiency of road transportation and the safety of life and property in our country. The salt storage anti-icing pavement technology that actively solves this problem is widely used, but there are few studies on long-term evaluation. The ice-interface bonding force of the salt storage anticoagulant ice asphalt mixture was investigated from the mechanical perspective, and the critical effective chloride ion concentration of the ice removal performance failure of the salt storage anticoagulant ice asphalt mixture was proposed. Through the whole simulation vehicle load and environment under the condition of rainfall release characteristic of chlorine ion, chlorine ion was tested by ISE single release concentration and cumulative release concentration, according to determine the critical concentration of available chlorine ion release effective salt effective cycle of asphalt mixture, and the failure of the regenerative asphalt mixture of salt slice processing, the actual release depth of chlorine ion in the mixture. Finally, the simulated precipitation in the test box was converted into the annual average precipitation in different regions of the country, and the actual service life of salt storage and anti-freezing ice asphalt pavement was estimated. The results show that the critical effective chloride ion concentration is 0. 000 9 mol/ L at the test temperature. Under the full simulation state, the effective action period of salt storage asphalt mixture is 45 cycles, and the effective action depth of chloride ion in the mixture is about 2 cm. The effective total rainfall of snow melting and ice suppression for anti-condensing ice asphalt pavement is 2 245. 5 mL. According to the ratio of the effective total rainfall to the annual rainfall in different regions, the effective action period of snow melting and ice suppression for anticondensing ice pavement is 1. 79 ~3. 72 years.
- Publication
Science Technology & Engineering, 2022, Vol 22, Issue 10, p4136
- ISSN
1671-1815
- Publication type
Article